Table A-16 Pll Characteristics - Motorola MC9S12DT256 User Manual

MC9S12DT256 Device User Guide — V03.07
This is very important to notice with respect to timers, serial modules where a pre-scaler will eliminate the
effect of the jitter to a large extent.
Conditions are shown in Table A-4 unless otherwise noted
Num C
1 P Self Clock Mode frequency
2 D VCO locking range
Lock Detector transition from Acquisition to Tracking
3 D
mode
4 D Lock Detection
5 D Un-Lock Detection
Lock Detector transition from Tracking to Acquisition
6 D
mode
7 C PLLON Total Stabilization delay (Auto Mode)
8 D PLLON Acquisition mode stabilization delay
9 D PLLON Tracking mode stabilization delay
10 D Fitting parameter VCO loop gain
11 D Fitting parameter VCO loop frequency
12 D Charge pump current acquisition mode
13 D Charge pump current tracking mode
14 C Jitter fit parameter 1
15 C Jitter fit parameter 2
NOTES:
1. % deviation from target frequency
2. f = 4MHz, f = 25MHz equivalent f
osc BUS
116

Table A-16 PLL Characteristics

Rating
2
(2)
(2)
(2)
(2)
= 50MHz: REFDV = #$03, SYNR = #$018, Cs = 4.7nF, Cp = 470pF, Rs = 10K
VCO
Symbol Min
f
1
SCM
f
8
VCO
|∆
|
3
trk
|∆
|
0
Lock
|∆
|
0.5
unl
|∆
|
6
unt
t
stab
t
acq
t
al
K
1
f
1
| i |
ch
| i |
ch
j
1
j
2
Typ Max Unit
5.5 MHz
50 MHz
4
%
1.5
%
2.5
%
8
%
0.5 ms
0.3 ms
0.2 ms
-100 MHz/V
60 MHz
µA
38.5
µA
3.5
1.1
0.13
1
(1)
(1)
(1)
%
%
Ω
.